Pugh served with the AIF in New Guinea during World War II and with the British Commonwealth Occupation Force in Japan after the war.[13][14] A group of Japanese soldiers surrendered to the unit with which Pugh was fighting during a lull in fighting, and on receiving orders to proceed Pugh and others shot and killed them.[15] This incident and the guilt he felt affected his attitude to war (he became a pacifist) and his painting.

Pugh was heavily influenced by German Expressionism. He read Sheldon Cheney'sThe Story of Modern Art (1941) while recuperating in hospital in New Guinea during World War II.[3] Pugh's primary influence was Wassily Kandinsky: "I can see Kandinsky in everything I do."[16] His training at the National Gallery School gave him a strong foundation in drawing and he learned the tonal painting technique, but when he took his teacher William (Bill) Dargie to see the first of Sidney Nolan's Kelly and Dargie's attitude was dismissive, Pugh left the school to develop his own ideas.[17]

In 1951 Pugh bought 15 acres (61,000 m2) of bushland near Cottles Bridge, 50 kilometres (31 mi) northeast of Melbourne, which he named Dunmoochin.[13][18] Pugh at first camped on the site, then built a wattle-and-daub shack.[3][18]

Art must be indigenous...arising out of the environment and background of a particular place and time. This could be nationalistic but I prefer to call it geographical art. For instance, Chinese and Mexican art reflect the background and the 'soul' of the country but are also universal... I therefore believe very much in the development of an Australian art -- it is the only truth for us to express to the rest of the world.[26][27]

Close observation of nature and its cyclical and savage rhythms became a constant theme in Pugh's painting.[3][28][29]

The Hon E G Whitlam (1972)

Pugh held his first solo show in 1957 at the Victorian Artists Society Gallery, where he displayed landscapes and portraits. The show was well received by critics.[28]Col. Aubrey Gibson, chairman of the National Gallery, was an early patron, as were a group of businessmen led by David Yencken and the businessman Andrew Grimwade.[4][30] Pugh joined the stable of the Sydney art dealer Rudy Komon.[4] Komon paid his artists a stipend, balanced against sales of their work, and this generosity made them very loyal, as it gave them stability and freedom from daily money worries.[30][31]

Pugh had consistent official support in the crucial early stages of his career. His inclusion in the 1961 Whitechapel and 1963 Tate exhibitions of Australian art gave him international exposure.[4][30][32] In 1966 Komon arranged a one-man show for Pugh at the Artists' Guild Gallery in St Louis in the United States;[30] The Commonwealth Institute staged a retrospective of his work in 1970.[4][30] He was represented in London by Andre Kalman, who showed him in 1975, 1976, 1977 and 1979, and with the Athol Gallery on the Isle of Man.[32]

Pugh chaired the Victorian ALP Arts Policy Committee from 1971, and Gough Whitlam appointed Pugh to the Australia Council for the Arts in 1973.[13] Pugh made public his disagreements with Council chairman H C "Nugget" Coombes who refused to implement the policy Pugh and his fellow committee members had crafted and then taken through the processes of the Victorian and Federal ALP conferences to become official ALP arts policy. Pugh resigned from the Council in 1974.[36]

Pugh's brother and grandnephew had protanope colour vision deficiency and it is probable that he did on biographical, gene pedigree inheritance and other grounds (such as failing the colour vision test when endeavouring to enlist in the Navy).[37]

Pugh married three times: to June Byford, Marlene Harvey and Judith Ley.[13] Pugh had two sons with Marlene, Shane and Dailan.[12][19]

Pugh became a pacifist during World War II, while on active service, and retained this position during the Vietnam War. He joined the Labor Party[13] to campaign for the end of Australia's involvement in that War.[38] The marriage to Marlene ended in 1969, they divorced in 1971.[13] In 1970 Pugh met Judith. He became very well known, as he and Judith used his status as a painter to improve that of the ALP. They did this in order to ensure the election of the ALP as Pugh was an anti war activist.[38] They separated in 1980 and divorced in 1981.[39] He lived for some years with Adrianne Strammp, who trained as a painter.[40]

Pugh returned to painting full-time after his experience with the Australia Council, and despite suffering three heart attacks[30][41] and minor ischaemic episodes, continued to paint and make prints until his fatal heart attack in 1990. Pugh established the Dunmoochin Foundation which now forms part of his legacy, and provides residences for artists in his bush property.[13][32]

Pugh also donated Dunmoochin land to the Victorian Conservation Trust (now Trust for Nature) in 1989.[15][42] Two plants of national significance have been recorded on this land.[42]

^Brian Finemore; Jennifer Phipps (1977). Freedom from prejudice: An introduction to the Australian Collection in the National Gallery of Victoria. National Gallery of Victoria. p. 111. ISBN978-0724100316.

^ abcdNational Commercial Banking Corporation of Australia (1982). The seventies: Australian paintings and tapestries from the collection of National Australia Bank. National Gallery of Victoria. pp. 28, 46, 74. ISBN978-0-909873-34-9.